Sash-cord guide



(No Model.) n

J. RICK. Sash Gord Guide. No. 241,821. Patented May 24,1881.

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UNITED STATES PATENT EEICE.

JAMES RICK, OF READING, PENNSYLVANIA.

SASH-CORD GUIDE.

SPECIFICATION forming part of Letters Patent No. 241,821, dated May 24, 1881.

Application tiled April Q, 1881. (No model.)

To all uhom tt may concern:

Be it known that I, JAMES RTCK, of the city of Reading, county ot' Berks,State of Penn- Sylvania, have invented a new and useful Improvement in Window-Sash-Cord Guides, ot' which the following is a specilication.

Thisimprovement is more particularly related to that class of sash-cord guides which are arranged to dispense to a greater or less extent with screws to secure them in the frame.

To enable those skilled in the art to make and use my invention, I will now describe the same. l

Referring to the drawings forming part of this specification, in illustration of, the same, in which like parts are numbered similar to each other, Figure 1 is a perspective elevation of a sash-cord guide with my improvement supplemented by a vertical front elevation of the case and pulley. Fig. 2 shows the mode ot' entering the case into the mortise of the window-frame, and also the case in place in the same. In both views the frame is shown .in section. Fig. 3 is a cross horizontal section on the line a a, ot' Fig. l; Fig. 4, a plan looking down upon the case-top, showing the joint-lock.

A represents the case, which is cast in two parts divided vertically, having equally rounded ends, which, when the halves are placed together, form full semicircular ends to the case. A slight angular ange projects equally all around the front face of the case, while a slight additional thickness is given to the front interior edge, forming a guide to the sheave B. Taking the upper rounded corner, A', as the radius-point, a segment, F, of serrated teeth is formed on the lower sides of the case, while a straight series of teeth, E, is placed on the upper sides of the case at right angles with the radial line when set seven-eighths inch away from the front face. A series of teeth, C, of a progressive increased length from the front to the rear, is placed at the end Al of the case, and a smaller set, D, gradually decreasing in length, is placed at the lower end, A2. In both instances these teeth are cast upon the same half of the case, and are set so as to lap over the joint, and thus prevent vertical movement ofthe case sides. On the same side with these teeth, and midway of the joint, a rounded tenon, G, is formed, and a corresponding recess is made in the joint-face of the opposing half ot' the case. This prevents horizontal movement ot the sides when in contact with each other. The sides being cast, as de scribed, with a pivot-hole for the sheave in each, and the sheaves prepared, the sides are placed together, the sheave inserted, the pivot put through and riveted, and the sash-cord guide is completed.

By thisimprovement in sash-cord guides the use of expensive machineryfor pulley-mortisin g and spur-bit countersinking is avoided. A carpenter with an ordinary kit of tools, comprising an anger of the proper dialneter and a firmerchisel, can perform all that is necessary to fit the cases to the frames. The frames can also be prepared at the factory in the usual manner on a pulleymortise-boring machine with a laterally-cutting hit, and as no countersinking has to be done the operation is simply one that a laborer can perform, the anger boring completely through the sides ofthe frame. Very little attention is required after the machine has been adjusted to travel `the right distance to admit the case. After the boring and cleaning of the mortise by hand or machinery, a chamfer or relish is taken oft' of the corner, around the face edge ofthe mortise. This brings the face of the case iiush with the face of the frame. The serrated teeth, both at the top and bottom of the case, have their fronts parallel with the front ofthe case, the backs or inclines pitching toward the rear. The additional length given to the upper set is to compensate for any looseness of vertical lit between the case and the mortise. The weight of the sash and sash-weightswould draw the lower serrationsinto the frame, while the upper serrations would still retain their hold upon the same. To enter the case it is placed with its upper rounded end, A', at the top of the pulley-mortise, the angular flange snug against the face of the frame, with the lower rounded end, A2, standing seven-eighths inch away from the frame, then driving upward and inward. At the same time the serrated teeth `C bury them selves in the end grain of the frame, the teeth D riding forward over the lower end of the pulley-mortise, the serrated series of teeth E F on the sides of the case also embedding themselves in the sides of the pulley-mortise jointly IOO with the end serration, and so firmly tix the case in place that no subsequent use of screws or nails is necessary to retain it in the frame.

1 am fully aware that sash-cord guides have been made with inclined wedge-shaped and forked ends, also with a spur extending across the lower end of the case, and that John I. Cowell, in 1872, 1873, and 1874, patented sashcorfl guides with bulged ends, which were provided with teeth or spurs on both their ends and sides, in which patentsclainis wereallowed for his mode of molding said spurs or teeth, which are not anticipationsof my mode ot'inolding` the same, and that the inode of entering his case at right angles with the frame (the only way in which a case with hulged ends dependent upon the [it of the ends in the au gur holes could be entered) piecludcd such an arrangement of spurs on both the ends and sides of the case as I have shown and claim as my invention; but all, with theabove exception, required the use of a eonntersinking-bit to secure the case by its flanges in the frame, or the when unprovided with anges. 3y my iniin contact. With the sheave in place it requires no special skill on the part ot' the carpenter to apply them, and saves from one to two screws over the ordinary construction of saslrcord guides.

Having fully described my improvement, its construction, and advantages, I desire to secure by Letters Patent the following claim A sash-cord guide, A, with rounded ends and divided vertically into two parts, when one of those parts is provided with a series ot' serrated teeth, C, of a progressive increased length from front to rear at the top end, and a similar series, D, ot' a gradually decreased length from front to rear at the lower end, in both cases the teeth C and D overlapping the joint by one-halt' their thickness, and forming ledges t'or the 'retention of the opposite half' ot' the case, which is left plain upon its ends, both parts being provided upon their sides with spurs arranged to conipelan angular entrance ofthe ease into the pulley-mortiseof' the frame, in the manner set forth, whereby the case is locked therewith, substantially as shown and in the manner described.

JAMES RICK.

\Vitnesses:

J AMES R. KENNEY, EnLwooD H. DEYSHER. 

